雷楝 lei lian

Lansium humile Hasskarl, Hort. Bogor. Descr. 1: 121. 1858; L. dubium Merrill; Reinwardtiodendron dubium (Merrill) X. M. Chen.

Shrubs to trees, 3-6(-27) m tall. Branches grayish white to brownish gray. Leaves odd-pinnate, 12-20 cm; petiole and rachis adaxially flat, abaxially rounded; leaflets usually 3 or 5, subopposite to opposite; petiolules 3-5 mm; leaflet blades thinly elliptic to oblong-lanceolate, 6-10 × 2.5-4 cm, leathery, both surfaces glabrous and lustrous, secondary veins numerous, thin, almost parallel, ± prominent on both surfaces, and connected at margin as an intramarginal vein, base cuneate, margin entire, apex obtuse to acuminate. Male flowers not seen in Chinese material. Female flowers sessile, globose, 2-3 mm in diam., axillary on apical part of branches, forming spikes, 7-12 cm; rachis slender, finely ribbed, with scattered flowers. Sepals less than 2 mm; lobes ca. 3 mm, glabrous. Berry ovoid, 1.7-2 × 1.2-1.3 cm, outside brown pubescent, with 1 or 2 seeds. Fr. Feb-Mar.

Thickets in mountainous regions. Hainan (Baisha) [Cambodia, Indonesia, Laos, Malaysia, Philippines, Thailand, ?Vietnam].